Patents by Inventor Richard A. Hickner

Richard A. Hickner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5698641
    Abstract: A coating composition applied to a substrate wherein the composition contains a solids content of at least about 65 percent by weight and includes a polyanhydride having more than one non-cyclic anhydride moiety, a glycidyl groups-containing oligomer, a catalyst and a surfactant or flow-control agent.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: December 16, 1997
    Assignee: The Dow Chemical Company
    Inventors: Michael L. Gould, Marvin L. Dettloff, David A. Grilli, Richard A. Hickner, James A. Rabon
  • Patent number: 5698332
    Abstract: A coating composition applied to a substrate, the composition containing a solids content of at least about 65 percent by weight and including a polyanhydride having more than one non-cyclic moiety, a co-reactant resin such as a glycidyl (meth)acrylate-containing polymer, and a latent catalyst, wherein the equivalent ratio of epoxy to anhydride groups is from about 0.8:1 to 1.3:1.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: December 16, 1997
    Assignee: The Dow Chemical Company
    Inventors: Michael L. Gould, David A. Grilli, Marvin L. Dettloff, Richard A. Hickner, James A. Rabon
  • Patent number: 5633330
    Abstract: A coating composition with a solids content of at least about 65% by weight comprises a polyanhydride having more than one non-cyclic anhydride moiety, a glycidyl groups-containing oligomer, a catalyst and a surfactant or flow-control agent.
    Type: Grant
    Filed: October 4, 1995
    Date of Patent: May 27, 1997
    Assignee: The Dow Chemical Company
    Inventors: Michael L. Gould, David A. Grilli, Marvin L. Dettloff, Richard A. Hickner, James A. Rabon
  • Patent number: 5633020
    Abstract: A coating composition with a solids content of at least about 65% by weight comprises a polyanhydride having more than one non-cyclic anhydride moiety, a co-reactant resin such as a glycidyl (meth)acrylate-containing polymer and a latent catalyst wherein the equivalent ratio of epoxy to anhydride is from about 0.8:1 to 1.3:1.
    Type: Grant
    Filed: October 4, 1995
    Date of Patent: May 27, 1997
    Assignee: The Dow Chemical Company
    Inventors: Michael L. Gould, David A. Grilli, Marvin L. Dettloff, Richard A. Hickner, James A. Rabon
  • Patent number: 5602274
    Abstract: A polyanhydride having a molecular weight of no more than about 2000 is useful in a coating composition with a coreactant resin such as an epoxy resin and comprises:(a) a polyvalent organic moiety;(b) a plurality of ester linkages bonded to the polyvalent organic moiety;(c) divalent organic moieties bonded to the ester linkages; and(d) non-cyclic anhydride moleties bonded to the divalent organic moleties.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: February 11, 1997
    Assignee: The Dow Chemical Company
    Inventors: Michael L. Gould, David A. Grilli, Marvin L. Dettloff, Richard A. Hickner, James A. Rabon
  • Patent number: 5591788
    Abstract: An advanced epoxy cationic resin useful as a cathodic electrodeposition coating is prepared by reacting in the presence of a suitable catalyst (A) a composition comprising (1) at least one diglycidyl ether of (a) an oxyalkylated aromatic diol or (b) an oxyalkylated cycloaliphatic diol or (c) certain oxyalkylated aliphatic diols and (2) at least one diglycidyl ether of a dihydric phenol with (B) at least one dihydric phenol and optionally (C) a monofunctional capping agent. Components (A-1) and (A-2) are employed in quantities such that from 10 to 75 weight percent of the diglycidyl ethers contained in component (A) are contributed by component (A-1), and from 25 to 90 weight percent of such glycidyl ethers are contributed by component (A-2). The terminal oxirane groups in the thus formed advanced epoxy resin are converted to cationic groups by reacting the resin with a nucleophilic compound and adding an organic acid and water at at least one point in the reaction.
    Type: Grant
    Filed: November 17, 1992
    Date of Patent: January 7, 1997
    Assignee: The Dow Chemical Company
    Inventors: Kenneth W. Anderson, Richard A. Hickner
  • Patent number: 5428082
    Abstract: Compositions of coreactant resins, such as an epoxy resin, and polyanhydrides that contain non-cyclic anhydride moieties are cured to provide coatings that have good exterior durability. Preferred high molecular weight polyanhydrides contain a central polymer moiety that has no more than about 25 weight percent repeating units derived from unsaturated aliphatic hydrocarbon monomers. In other preferred polyanhydrides, the anhydride moleties are linked to a central moiety by an ester moiety.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: June 27, 1995
    Assignee: The Dow Chemical Company
    Inventors: Michael L. Gould, David A. Grilli, Marvin L. Dettloff, Richard A. Hickner, James A. Rabon
  • Patent number: 5360838
    Abstract: An advanced epoxy cationic resin useful as an electrodeposition coating and having a charge density of from 0.2 to 0.6 milliequivalent of cationic charge per gram of resin is prepared by reacting in the presence of a suitable catalyst (A) a composition comprising (1) at least one diglycidyl ether of (a) an oxyalkylated aromatic diol or (b) an oxyalkylated cycloaliphatic diol or (c) certain oxyalkylated aliphatic diols and (2) at least one diglycidyl ether of a dihydric phenol with (B) at least one dihydric phenol and optionally (C) a monofunctional capping agent.Components (A-1) and (A-2) are employed in quantities such that from 10 to 75 weight percent of the diglycidyl ethers contained in component (A) are contributed by component (A-1), and from 25 to 90 weight percent of such glycidyl ethers are contributed by component (A-2). Components (A) and (B) are employed in such quantities that the resultant epoxy resin has an average epoxide equivalent weight of from 350 to 10,000.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: November 1, 1994
    Assignee: The Dow Chemical Company
    Inventors: Kenneth W. Anderson, Richard A. Hickner
  • Patent number: 5312879
    Abstract: A method for preparing an advanced epoxy cationic resin from an epoxy resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups is improved by using as the epoxy-based resin a blend of (I) an epoxy resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of an aliphatic diol which diol is essentially free of ether oxygen atoms, such as a condensation product of 1,4-butanediol and epichlorohydrin, optionally (2) a diglycidylether of a dihydric phenol, for example a diglycidyl ether of bisphenol A, (3) a dihydric phenol such as bisphenol A, and optionally (4) a capping agent such as p-nonylphenol and (II) a different cationic epoxy resin. Such resin blends can be utilized in cathodic electrodeposition coating systems.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: May 17, 1994
    Assignee: The Dow Chemical Company
    Inventors: Nancy A. Rao, Richard A. Hickner
  • Patent number: 5292832
    Abstract: Advanced epoxy cationic resins are prepared from an epoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups is improved by using as the epoxy-based resin a blend of (I) an epoxy-based resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of an oxyalkylated aromatic or cycloaliphatic diol, such as a condensation product of bisphenol A, ethylene oxide and epichlorohydrin, optionally (2) a diglycidylether of a dihydric phenol, for example a diglycidyl ether of bisphenol A, (3) a dihydric phenol such as bisphenol A, and optionally (4) a capping agent such as p-nonylphenol and (II) a different cationic epoxy-based resin. Such resin blends can be utilized in cathodic electrodeposition coating systems. Use of the diglycidylether of an oxyalkylated diol provides coating compositions with lower viscosity and produces deposition coatings of higher film build and better surface appearance than compositions without this component.
    Type: Grant
    Filed: January 5, 1993
    Date of Patent: March 8, 1994
    Assignee: The Dow Chemical Company
    Inventor: Richard A. Hickner
  • Patent number: 5260355
    Abstract: A method for preparing an advanced epoxy cationic resin from an epoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups is improved by using as the epoxy-based resin a blend of (I) an epoxy-based resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of an aliphatic diol which diol is essentially free of ether oxygen atoms, such as a condensation product of 1,4-butanediol and epichlorohydrin, optionally (2) a diglycidylether of a dihydric phenol, for example a diglycidyl ether of bisphenol A, (3) a dihydric phenol such as bisphenol A, and optionally (4) a capping agent such as p-nonylphenol and (II) a different cationic epoxy-based resin. Such resin blends can be utilized in cathodic electrodeposition coating systems.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: November 9, 1993
    Assignee: The Dow Chemical Company
    Inventors: Nancy A. Rao, Richard A. Hickner
  • Patent number: 5248741
    Abstract: An advanced epoxy cationic resin useful as an electrodeposition coating having a charge density of from 0.2 to 0.6 milliequivalent of cationic charge per gram of resin is prepared by reacting in the presence of a suitable catalyst (A) a composition comprising (1) at least one diglycidyl ether of (a) an oxyalkylated aromatic diol or (b) an oxyalkylated cycloaliphatic diol or (c) certain oxyalkylated aliphatic diols and (2) at least one diglycidyl ether of a dihydric phenol with (B) at least one dihydric phenol and optionally (C) a monofunctional capping agent. Components (A-1) and (A-2) are employed in quantities such that from 10 to 75 weight percent of the diglycidyl ethers contained in component (A) are contributed by component (A-1), and from 25 to 90 weight percent of such glycidyl ethers are contributed by component (A-2). Components (A) and (B) are employed in such quantities that the resultant epoxy resin has an average epoxide equivalent weight of from 350 to 10,000.
    Type: Grant
    Filed: November 17, 1992
    Date of Patent: September 28, 1993
    Assignee: The Dow Chemical Company
    Inventors: Kenneth W. Anderson, Richard A. Hickner
  • Patent number: 5216045
    Abstract: Advanced epoxy cationic resins are prepared from an epoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups is improved by using as the epoxy-based resin a blend of (I) an epoxy-based resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of an oxyalkylated aromatic or cycloaliphatic diol, such as a condensation product of bisphenol A, ethylene oxide and epichlorohydrin, optionally (2) a diglycidylether of a dihydric phenol, for example a diglycidyl ether of bisphenol A, (3) a dihydric phenol such as bisphenol A, and optionally (4) a capping agent such as p-nonylphenol and (II) a different cationic epoxy-based resin. Such resin blends can be utilized in cathodic electrodeposition coating systems. Use of the diglycidylether of an oxyalkylated diol provides coating compositions with lower viscosity and produces deposition coatings of higher film build and better surface appearance than compositions without this component.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: June 1, 1993
    Assignee: The Dow Chemical Company
    Inventor: Richard A. Hickner
  • Patent number: 5206274
    Abstract: A method for preparing an advanced epoxy cationic resin from an epoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups is improved by using as the epoxy-based resin a blend of (I) an epoxy-based resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of an aliphatic diol which diol is essentially free of ether oxygen atoms, such as a condensation product of 1,4-butanediol and epichlorohydrin, optionally (2) a diglycidylether of a dihydric phenol, for example a diglycidyl ether of bisphenol A, (3) a dihydric phenol such as bisphenol A, and optionally (4) a capping agent such as p-nonylphenol and (II) a different cationic epoxy-based resin. Such resin blends can be utilized in cathodic electrodeposition coating systems.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: April 27, 1993
    Assignee: The Dow Chemical Company
    Inventors: Nancy A. Rao, Richard A. Hickner
  • Patent number: 5064880
    Abstract: A method for preparing an advanced epoxy cationic resin from an epoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups is improved by using as the epoxy-based resin a blend of (I) an epoxy-based resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of an aliphatic diol which diol is essentially free of ether oxygen atoms, such as a condensation product of 1,4-butanediol and epichlorohydrin, optionally (2) a diglycidylether of a dihydric phenol, for example a diglycidyl ether of bisphenol A, (3) a dihydric phenol such as bisphenol A, and optionally (4) a capping agent such as p-nonylphenol and (II) a different cationic epoxy-based resin. Such resin blends can be utilized in cathodic electrodeposition coating systems.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: November 12, 1991
    Assignee: The Dow Chemical Company
    Inventors: Nancy A. Rao, Richard A. Hickner
  • Patent number: 4980397
    Abstract: A method for preparing an advanced epoxy cationic resin from an opoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups, wherein the improvement is using as the epoxy-based resin an advanced epoxy resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of an aliphatic diol which is essentially free of ether oxygen atoms, such as a diglycidyl ether of 1,4-butanediol, (2) a diglycidylether of a dihydric phenol, for example a diglycidyl ether of bisphenol A and (3) a dihydric phenol such as bisphenol A and optionally a capping agent such as p-nonylphenol.Coating compositions suitable for electro-deposition are prepared from the product obtained by the process.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: December 25, 1990
    Assignee: The Dow Chemical Company
    Inventors: Nancy A. Rao, Richard A. Hickner
  • Patent number: 4977202
    Abstract: A method for preparing an advanced epoxy cationic resin from an epoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups, wherein the improvement is using as the epoxy-based resin an advanced epoxy resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of an aliphatic diol which is essentially free of ether oxygen atoms, such as a diglycidyl ether of 1,4-butanediol, (2) a digylcidylether of a dihydric phenol, for example a diglycidyl ether of bisphenol A and (3) a dihydric phenol such as bisphenol A and optionally a capping agent such as p-nonylphenol.Coating compositions suitable for electrodeposition are prepared from the product obtained by the process.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: December 11, 1990
    Assignee: The Dow Chemical Company
    Inventors: Nancy A. Rao, Richard A. Hickner
  • Patent number: 4946569
    Abstract: A method for preparing an advanced epoxy cationic resin from an epoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups, wherein the improvement is using as the epoxy-based resin a blend of (I) an epoxy-based resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of a polyetherpolyol, such as a condensation product of dipropylene glycol and epichlorohydrin having an epoxy equivalent weight of 185, optionally (2) a diglycidylether of a dihydric phenol, for example a diglycidyl ether of bisphenol A, (3) a dihydric phenol such as bisphenol A, and optionally (4) a capping agent such as p-nonylphenol and (II) a different cationic epoxy-based resin. Such resin blends can be utilized in cathodic electrodeposition coating systems. Use of the diglycidylether of a polyetherpolyol provides coating compositions with lower viscosity and produces deposition coatings of higher film build than compositions without this component.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: August 7, 1990
    Assignee: The Dow Chemical Company
    Inventors: John M. McIntyre, Nancy A. Rao, Richard A. Hickner
  • Patent number: 4883572
    Abstract: A method for preparing an advanced epoxy cationic resin from an epoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups is improved by using as the epoxy-based resin a blend of (I) an epoxy-based resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of an aliphatic diol which diol is essentially free of ether oxygen atoms, such as a condensation product of 1,4-butanediol and epichlorohydrin, optionally (2) a diglycidylether of a diphenol, or example a diglycidyl ether of disphenol A, (3) a diphenol such as bisphenol A, and optionally (4) a capping agent such as p-nonylphenol and (II) a different cationic opoxy-based resin. Such resin blends can be utilized in cathodic electrodeposition coating systems.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: November 28, 1989
    Assignee: The Dow Chemical Company
    Inventors: Nancy A. Rao, Richard A. Hickner
  • Patent number: 4872961
    Abstract: Cathodic electrodepositable coating compositions comprising an aqueous dispersion of (1) at least one cationic epoxy-based resin, (2) at least one blocked isocyanate crosslinker, and (3) a solvent system containing one or more organic solvents are improved by (a) employing a blocked isocyanate crosslinker which deblocks at a temperature of less than about 160.degree. C., and (b) employing as the solvent system, one which is substantially free of any organic solvent which will react with isocyanate groups at the temperature employed to cure said coating.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: October 10, 1989
    Assignee: The Dow Chemical Company
    Inventors: John M. McIntyre, Kenneth W. Anderson, Nancy A. Rao, Richard A. Hickner